Sū Jiǒng 蘇泂 (zì Zhàosǒu 召叟) was a native of Shānyīn 山陰 (modern Shàoxīng, Zhèjiāng) and a fourth-generation descendant of the Northern Sòng Right Vice-Director Sū Sòng 蘇頌 (1020–1101). The Sòngshǐ “Sū Sòng zhuàn” gives no detailed pedigree of the line, so his exact birth and death dates are unknown; floruit in the QìngyuánJiādìng era. Chén Zhènsūn’s 陳振孫 Zhízhāi shūlù jiětí 直齋書錄解題 lists his original collection at twenty juàn — long since lost. Internal evidence in his poetry shows that he travelled with his grandfather to Shǔ 蜀 (Sìchuān) in his youth, drifted across the empire as an adult, and twice served on the Jiànkāng (Nánjīng) staff under recommendation. His circle included the most prominent poets of the Jiātài and Jiādìng eras: Xīn Qìjí 辛棄疾, Liú Guò 劉過, Wáng Nán 王柟, Pān Chēng 潘檉, Zhào Shīxiù 趙師秀, Zhōu Wénpú 周文璞, and Jiāng Kuí 姜夔. From a poem on Lù Yóu’s 陸游 appointment to compile the dynastic history (1202), it is clear that Sū studied poetry under Lù Yóu in his youth. The Sìkù editors place him “outstandingly above the Jiānghú group” (江湖詩派之中可謂卓然特出). His sole surviving collection, the Lěngránzhāi shījí KR4d0338, was reconstituted from the Yǒnglè dàdiǎn.